Polyfunctional modifier for bio-corrosion resistant high-performance fine-aggregate concretes

DOI

10.2991/aime-17.2017.101How to use a DOI?

Keywords

high-performance concrete; low water demand binder; water-reducing ability; antifungal properties; bio-corrosion

Abstract

Use of binders with low water demand opens prospects for obtaining high-performance concretes. A polyfunctional modifier based on resol-type resorcinol-furfural oligomers allows one to obtain binders with low water demand and high specific surface area, compressive strength, and water-reducing ability. This research demonstrates that a more intensive strength development for 1-2 days of curing is observed in concretes based on low water demand binders compared to the reference sample. During this process, a denser microcrystalline structure with no large-grained formations or visible defects is formed. It was proved that introduction of the optimum quantity of the modifier into a binder completely suppresses mold growth. Isolates of Aspergillus niger and Penicillium chrisogenum Thom fungi were used as the biological deterioration factor for specimen. Assessment of antifungal properties of resorcinol-furfural oligomers on a six-point scale (sample/environment) is presented. Strength properties of the concrete with the modifier in question are significantly increased due to the decrease of the water-cement ratio, the reduction of microfractures within the concrete, higher density of its structure, and absence of bio-corrosion. The resorcinol-furfural polyfunctional modifier can be used to produce innovative high-strength materials for use in additive manufacturing and further use of the produced articles in biologically active environments

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Valentina Anatolyevna Poluektova
AU  - Valentina Dmitryevna Mukhacheva
AU  - Julia Vladimirovna Denisova
PY  - 2017/07
DA  - 2017/07
TI  - Polyfunctional modifier for bio-corrosion resistant high-performance fine-aggregate concretes
BT  - Proceedings of the International Conference "Actual Issues of Mechanical Engineering" 2017 (AIME 2017)
PB  - Atlantis Press
SP  - 620
EP  - 625
SN  - 2352-5401
UR  - https://doi.org/10.2991/aime-17.2017.101
DO  - 10.2991/aime-17.2017.101
ID  - Poluektova2017/07
ER  -